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(NoModeL) A. B. PAUNOE & S. G. OABELL. ELECTRIC MEANS FOR PREVENTING BOILER INGRUSTATION.

No. 438,579. Patented Oct. 14, 1890.

IIIIIIL' llll u a i mi. 1W I JIHE Qwitmaooao ma NORRlS versus col. vno'ra-umm, WASHINGTON, a. c.

UNITED STATES PATENT OFFICE.

ALBERT B. FAUNOE, OF QUINCY, ILLINOIS, AND SAMUEL G. CABELL, OF IVASHINGTON, DISTRICT OF COLUMBIA, ASSIGNORS OF ONE-THIRD TO MILTON S. OABELL, OF QUINCY, ILLINOIS.

ELECTRIC MEANS POR PREVENTING BOILER- INCRUSTATION.

SPECIFICATION forming part of Letters Patent No. 438,579, dated October 14, 1890.

Application filed June '7, 1890- Serial No. 354,595. (No model.)

T ctZZ whom it may concern-.-

Be it known that we, ALBERT B. FAUNCE to secure other advantages of economy and and SAMUEL G. CABELL, citizens of the United convenience.

States, residing, respectively, at Quincy,in the The invention consists in the combination 5 county of Adams and State of Illinois, and of a feed-water conduit, a negative and a posi- \Vashington,in the Districtof Columbia, have tive electrode of any suitable metals, mateinvented certain new and useful Improverial, or composition which will induce galments in Means for Preventing Incrustation vanic action, insulated from the body of the in Steam-Boilers; andwe hereby declare that conduit and out of contact with each other,

To the following is a full, clear, and exact deand Wires or other means of coupling said scription of the invention, such as will enable electrodes outside the conduit or vessel,whereothers skilled in the'art to which it appertains by said negative and positive elements may to make and use the same. be coupled for use or uncoupled, and thus This invention relates to improvements in save the consumption or destruction of said 15 means for preventing incrustation in steamelements when not required for use.

. boilers, and belongs to that class wherein the It also consists in the combination, with feed-water and its impurities are subjected to negative and positive elements, arranged as galvanic and magnetic influences, or either above indicated, of an electro-magnet arof them, in its passage to and before it reaches ranged so that the current of electricity from 20 the boiler. one pole to another may be made to pass The object of the invention is to secure a through the magnetic helix, which thus is maximum of efficiency in a convenient and made to serve as a resistance-coil to retard economical manner. consumption of the elements of the battery It is well known that galvanic and magnetic and at the same time to energize the magnet.

2 5 influences upon water and its impurities have It also consists in the combination, with the the effect of removing scale already formed in foregoing elements, of an independent genboilers, and of preventing the formation of erator of electricity. the same when applied within the boiler be- It also consists in certain details of conlow the water-line, and that galvanic influstruction and combinations involved in the 0 ences upon the water before introduction to apparatus we have devised for carrying out the boiler have a similar effect-f It is also true the inventions above stated. that the introduction to a boiler of negative In the accompanying drawings, Figure lis and positive elements to produce galvanic ac a central section of a gland or vessel to be intion is objectionable, because the material of terposed as a part of the water-conduit from a 5 the boiler is liable to be corroded or confeed-water heater toaboiler. Fig.2isaplan sumed, and thus the boiler is destroyed. Furview of the same. Fig. 3 is a cross-section 8 5 thermore, it is true that the introduction of showing a zinc or copper ring in elevation. an electro-magnet to a boiler below the Wa- Fig. 4: is a plan ofapolarized steel star-shaped fer-line begets practical difficulties, among body.

0 which is the necessity of inclosing the mag- Ais a gland orvessel,'1: refe1'-ably of cast-iron,

net in a waterand steam tight case, and the of any desired shape and dimensions. This impairment of theinsulation of the magnetic gland is provided with bosses to a for connecheliX by the heat and by the penetration of tion with the feed-pipe and with flanges a a, water in case the joints of the casing are imthrough which by means of suitable bolts the 45 perfect, and repairs thereof can only take lid or cover A'is secured in place. The parts place by cooling off the boiler and removing A and A are fitted together to make a tight 5' the magnet. joint, and for greater security packing way Our invention, relating to the treatment of be interposed between them.

B is an incased electroqnagnet adjusted in the water before it enters the boiler, is designed to obviate these difficulties, as well as the lid, as shown, and to the bottom of this magnet is secured a permanently-magnetized star-shaped body B. This body has a hub or sleeve to embrace the elcctro-magnet, and is secured by means of a set-screw b or otherwise, as may be most convenient.

C is a copper ring or loop having inwardlyro'ectin oints c as shown and Z is azinc ring having points 2 similar to those on the copper ring.

D is an independent generator of electricity, having leading-in and leading-out Wires or coupling devices. The copper and the zinc rings are provided with stems or studs 0 and .2, respectively, and these extend through insulating-buttons d d to the upper or outside of the lid or cover. The joints between the insulators, the lid, and the stems are proergy maybe augmented by a current from an independent electrical generator, as D.

We have referred throughout the specification to the invention as being arranged in the feed-water conduit, while by preference we place the device between the heater and the boiler; but its arrangement anywhere between the source of supply and the boiler, as in the feed-water tank, the heater, the supply-pipe, or the mud-drum, will bring it within the scope of ourinvention. It is remarked that a circuit-breaker may be interposed between the. electrical generator and any of the parts to be coupled therewith, if desired, and also that the positive element may be inclosed in porous cups, if found expedient, without departing from our invention.

- Obviously the form and dimensions of the gland, the form and dimensions of the positive and of the negative elements, and the construction of the magnet and the independent generator may be varied indefinitely Without departing from our invention, the principle to be observed being that the positive and negativeelements be out of contact with each other and insulated from the body of the gland to be coupled at will outside the gland or vessel. with each other or the magnetic helix or independent generator.

With certain waters, the boiler being clean,

the influence'of the permanent magnet will be suflicient to prevent the formation of scale.

With other waters the combined influence of a magnet and the relatively feeble influence of the galvanic action, weakened by passing the current through a coil, will be suflicient, and with other waters the influence of galvanic action of all the electrodes coupled together may be required. In some cases we may couple the electrodes or the magnet, or all, with an outside source of electricity, and thus augment the influence of both or either to amaximum degree; but this will rarely be required.

This apparatus is simple and is cheaply. made and affords means wherebyjust the required force or influence to produce the result desired and the corresponding consumption or exhaustion of the electrodes may be regulated at will.

Having now described our invention, what we claim is 1. The combination of a-feed-waterconduit,

' a negative and a positive electrode out of contact with each other and insulated from the body of the conduit, and means for coupling and uncoupling said electrodes outside the conduit, substantially as described.

' 2. The combination of a feed-water conduit, a negative and a positive electrode out of contact with each other, insulated from the con- 1 duit, means for coupling and uncoupling said electrodes outside said conduit, and an interposed magnetic helix, substantially as described.

3. The combination of a feed-water conduit, a negative and a positive element out of contact with each other and insulated from the conduit, an independent electrical generator, and means for coupling said elements with said generator, substantially as described.

4. The combination of afeed-water conduit, a negative and a positive element out of contact with each other and insulated fromthe conduit, a magnetic helix, an independent electrical generator, and means for coupling the electrodes and helix with said generator, substantially as described.

In testimony whereof we affix on r signatures in the presence of Witnesses.

ALBERT B. FAUNCE. SAMUEL G. OABELL. Witnesses to the signature of Albert B. Faunce:

HENRY SoEBBINe, FRANK SOEBBING. Witnesses to the signature of Samuel G. Cabell:

WM. M. S'rooKBRIDGE, EDWIN L. BRADFORD.

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